.top p {
  padding: 0 15px 0 15px;
  line-height: 55px;
  display: flex;
  justify-content: space-around;
  color: #B9B9B9;
  font-size: 16px;
  border-bottom: 2px solid #dad5d5;
}
.top p span.active {
  position: relative;
  color: #4B99FF;
  font-size: 18px;
}
.top p span.active a {
  position: absolute;
  bottom: -1px;
  left: -6px;
  width: 44px;
  height: 2px;
  background-color: #72bdec;
}
.top p span.active .special {
  left: 10px;
}
main {
  flex: 1;
  overflow: scroll;
}
main div.lao {
  font-size: 30px;
  padding-left: 20px;
}
main > div {
  display: none;
}
main > div.cur {
  display: block;
}
main div.test-main {
  padding: 0 10px 0 10px;
}
main div.test-main > p {
  line-height: 40px;
  font-size: 16px;
}
main div.test-main .new {
  width: 100%;
  height: 200px;
  border-radius: 20px;
  box-shadow: 0px 0px 8px 0px rgba(0, 0, 0, 0.4);
}
main div.test-main .new .bgi {
  width: 100%;
  height: 145px;
  border-top-left-radius: 20px;
  border-top-right-radius: 20px;
  background-image: url(../imgs/part4.png);
  background-repeat: no-repeat;
  background-size: cover;
  background-position: 0 -50px;
}
main div.test-main .new .text {
  padding: 10px 0 10px 10px;
}
main div.test-main .new .text p {
  font-size: 14px;
  margin-bottom: 8px;
  color: black;
}
main div.test-main .new .text span {
  color: #ADADAD;
  font-size: 12px;
}
main div.test-main .course {
  width: 100%;
}
main div.test-main .course li {
  width: 100%;
  height: 130px;
  border-radius: 20px;
  box-shadow: 0px 0px 8px 0px rgba(0, 0, 0, 0.4);
  background-image: url(../imgs/part1.png);
  background-repeat: no-repeat;
  background-size: 360px;
  background-position: 0 -70px;
  margin-bottom: 12px;
}
main div.test-main .course li p {
  font-size: 18px;
  padding-left: 20px;
  padding-top: 50px;
  margin-bottom: 15px;
  color: rgba(255, 255, 255, 0.774);
}
main div.test-main .course li span {
  margin-left: 20px;
  color: rgba(255, 255, 255, 0.753);
}
main div.test-main .course li:nth-of-type(2) {
  background-image: url(../imgs/part2.png);
  background-size: 360px;
  background-position: 0px -20px;
}
main div.test-main .course li:nth-of-type(3) {
  background-image: url(../imgs/part3.png);
  background-size: 360px;
  background-position: 0px -20px;
}
